File photo taken on July 28, 1937 shows Nanyuan barrack after a bombing attack by invading Japanese troops. A batch of file recording Lugouqiao Incident during the anti-Japanese war were released by Chongqing Beibei District Archive on July 6, 2015. On July 7, 1937, Japanese aggressors first bombarded Wanping County Town, then attacked the Lugouqiao Bridge to start a full-scale war of aggression against China in an attempt to put all the country under its colonial rule. (Photo/Xinhua)
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